title: Dual-energy projection radiography: initial clinical experience.
mesh_terms: D001842:Bone and Bones / Q000000981:diagnostic imaging; D006801:Humans; D011860:Radiography, Abdominal; D013902:Radiography, Thoracic / Q000379:methods; D013382:Subtraction Technique; D014057:Tomography, X-Ray Computed / Q000379:methods*